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No o M del) w. 1. MOGUIRB &.P. B. MQKBNNEY.

VENTILATING APPARATUS.

lPatented May '7, 1895.

No. 538,976.v

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UNITED STATES PATENT OEEICE.

WILLIAM F. MCGUIRE AND FRANK B. MCKENNEY, OF ROCKFORD, ILLINOIS,ASSIGNORS OF ONE-THIRD TO JOHN L. CLARK, .OF SAME'PLACE.

vE|-1T`|LAT|Nev APPARATUS.

SPECIFICATION forming part of Letters Patent No. 538,976, dated May 7,1895.

Application iled May 24, 1893- Renewed October 20, 1894- Serial No.526|484= (No model.)

To a/ZZ whom it may concern:

Be it known that we, WILLIAM F. MCGUIRE and FRANK E. MCKENNEY, citizensof the United States, residing at Rockford, in the county of Winnebagoand Stateof Illinois, have invented certain new and useful Improvementsvin Ventilating Apparatus, of which the following is a specification.

The object of this invention is to ventilato the rooms heated by a hotair furnace, by creating an escape for the cold and foul air whichoccupies a space near the oor, and conveying such cold and foul air tothe fur. nace and thence to the chimney or cold air shaft.

' The further object ot this invention is to produce a check valve forthe Ventilating apparatus in order to prevent the backward .the roomthan the valve preventsthe admission of air from the draft of air intothe rooms.

In the accompanying drawings, Figure 1 is a vertical section through theVentilating apparatus; Fig. 2 is a verticalsection through thecheck-valve. Fig. 3 is a section of the connection of the pipes 6 and 7with the room. Fig. It shows the connection of the pipe 3 and l 1t withthe chimney.

The furnace 1, in this instance is of a well known construction. Aroundthisfurnace is located a jacket 2, in the upper portion of which islocated a V-shaped partition 3.

A smoke pipe 4, communicates with the furnace and with a chimney. Fromthe top ofthe upper compartment extends a pipe 5, which surrounds thesmoke pipe 4, the two communicating with the chimney.

From the upper portion ofthe casing radiate pipes 6, conveying heat tothe room, and Ventilating pipes 7, extend parallel with the I heatconveying pipes until near the furnace where they pass inside the-latter pipes and -communicate with the compartment in the top of thecasing.

In the pipe 5, before the smoke pipe enters it is located a check-valvepreventing the backward draft of air to the rooms and consists of avalve 8, having alhinged' or pivotal connection with the casing '9. 'Arod- 10,v is connected to the -valve and a-weight 11, is made adjustablealong the' rod. The sides of the casiug'are provided with openings,which 'are covered with mica'l2. r

Cold air is taken in at the-bottom of the furnace,.wliich aftercirculating around the .theroom and leading furnace ascends the pipes 6,to the room, and

after circulating around the room until it becomes cold, will'descen'dthe pipe 7, and enter the compartment in the top of the casing, and fromthence passes to the chimney or coldair shaft by means of the pipe '5.

The pipe 7, is located on a lower level in pipe 6, and as the checkchimney into the compartment in the' top of the casing the air mustbesupplied from theroom, and as the air in the compartment becomes heatedit will escape to the chimney creating a circulation of air, drawing thecold and foul air from the room, which is replaced by pure heated airascending the pipe 6. By extending the pipe 7, a portion of its lengthwithin the heat conducting pipe 6, it will assist in heating the coldair on its passage to the chimney, and the air will be further heatedbythe smoke pipe extending a portion of its length inside oftheventilating pipe on the chimney sideof the furnace.

Owing'to the valve being nearly balanced, should the air blow down thechimney the valve would instantly close, preventing the admission of airto the room. It is often the case thatrooms are not properly heated byhot air, owing to the fact that such rooms are kept closed', preventingthe escape of the cooled air, land consequently-circulation, but by ourarrangement, we get a complete circu- 8 5 lation as by means of ourVentilating pipe the cooled air is carried away allowing the admissionof heated air to take its place.

It is evident that a series of Ventilating and air conducting pipes maybe connected with the heating drum and outer casing.

We claim as our invention- In a Ventilating apparatus,a heating appa-Aratus having a closed chamber in itsy upper portion, a Ventilating pipeconnected ,withchamber, a heat conducting` pipe surrounding theVentilating pipe, a pipe p from the chamber to the chimney or cold airshaft, a smoke lpipe located inside of the last mentioned pipe, and avalve located in the pipe leading from the chamber, preventing theadmission of air to the rooin through the Ventilating pipe. A WILLIAM F.MCGUIRE.

FRANK B. MCKENNEY.

IOO

Witnesses:`

A. O. BEHEL, E. BEHEL.

